Currently Being ModeratedJan 24, 2013 1:23 PM (in response to josephfromniskayuna)
Go to the Apps item in the iTunes sidebar:
It will be in the pulldown menu at the upper-left if you have iTunes 11.
Then click the "Check for Updates" button at the lower-right of the iTunes window. Log in as appropriate, and download any updates available that you wish. Then sync your iPhone.